If you had to take four 30 minute breaks during your trip to fill up on gas how long would it take you to get there in total

Which values for a and b will create infinitely many solutions for this system of equations? ax-y=8 2x+y=b

If f(x) =3x-2 and g(x) =2x+1 fins (f+ g) (x)

Liz is shipping a package to her friend.the maximum weight of a medium flat-rate box is 20 pounds,including the box which weighs 6 ounces.write and solve an inequality to describe the possible weight ,w, of the contents that liz will ship to her friend if she must use a medium flat-rate box.